Omega HFH80 User guide

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HFH80 SERIES

Fruit Hardness Tester

INSTRUCTION

SHEET

Shop online at: omega.com e-mail: [email protected]

For latest product manuals: omegamanual.info

Made in Taiwan

M5080/0112

Gener al oper ation p recau tions

WARNIN G

Accurate Fruit Testin g Requi res:

Controlling tip penetration. Providing a me ans t o v erify gage accuracy. Co ntrol ling the sp eed o f ti p penetration.

1. FEATURE S

The Ripeness Tester is a hand-

held comp act penetrometer for f r ui t f i rm n e ss a n d s o me vegetable hardness te sting, the universally accepted measure of ripeness.

* The HFH80 series is the grower’s

indispensable t ool for knowing when to pick and ship.

* The HFH80 Fruit Tester measures

the f o rce r e quir e d to p u s h a

plunger tip of specified s ize into th e frui t pulp . The fo

rce reading assists in determining the appropriate pi cking time or monit or i n g f r u i t softe ni n g during storage.

* Because of the numbe r of fruit

a n d v e g et a bl e v ar i et i es , geo g raph i cal loc a tio n s a n d o t h e r v a r i a t i o n s , t h e a p pr o p ri a t e f ir m n es s f o r harvesting will vary. Therefore H

FH80 u se r s m ust co mb i n e ex perience and e xp er tise to es tablish the firmness value that applies to their speci fic variety and locale.

* Automatic power off to conserve

power.

* Can com mun i cat e wi th P C f o r

r e c o r d i n g , p r i n t i n g a n d a n a l yz ing b y t he o ptio n a l software and cable for RS232C interface.

2. A GU IDE TO S ELECT THE MODEL

The model of HFH80 Fruit Testers

to cho se from 3 models is used with specific size pe netrometer tip s for tes tin g r i pen ess of specific fruit.

HFH81

(3.5mm) Small Fruits, Soft Fruits,

HFH83

(7.9mm) Larger Fruits, Firm

Fruits ,Hard Fruits

(11.1mm) Apple, Fi rm Frui ts

Small Fruits: e.g. Strawberry,

Cherry, Grape , Berries

Soft Fruits: e.g. Peac h, Banan a,

A p r i c o t , P l u m , M e l o n , C i t r u s , Persim

mon Firm Fruits: e.g. Pear, Nectarine, Kiwi Hard Fruits: e.g. Avocado

3. SPECIFIC ATIONS

Display 4 digits,10 mm LCD

Range:

HFH81

0.2-5.0 kgf/cm

Tip s ize 3.5 mm HFH83

0.2-11.0 kgf/cm Tip size 11.1mm

0.4-22.0 kgf/cm Tip size 7.9mm

Tip size can be interc hange d after tip size is chosen.

Resolution:

0.01 if reading<10

0.1 if 10<reading<99.9 1 if reading>100

Unit conversion:

kgf (kgf/cm )

lbf (lbf/cm ) N (N/cm )

Pa Accuracy: ± (1%H+0.1)kgf/cm Power supply: 4x1.5 AAA size

FRUITS & VEGETABLES MULTIPL E DISPLAY UNIT- KG, L B, N & P EASY ZER O ADJUSTMENT. ACCURACY VERIFICATION

ALL RI GHTS R ESERV ED

Th an k you for your se le ct io n of th is Fruit Hardness Tes te r. To en su re t ha t yo u get the m os t ou t of the i ns tr um en t, we st ro ng ly re co mm en d you read an d f ol lo w t he i ns tr uc ti on s i n th is manual c ar ef ul ly.

Power off : 2 modes

Manual off at any time A u t o p o we r o ff a fter 5 m in u t e s f r om l a s t k e y operation

Operating conditions:

Temperature : 0-45℃

4. FRONT PANEL DESCRIPTIONS

3-1

3-8 3-5

3-6

3-9

3-2 3-3

3-4

5. MEASUREMEN T PROCEDURE S

Humidity : below 90% RH

Dimensions:

204x62x33mm or

8.0x2.4x1.3 inch

Weig ht:

230g (not including batteries) Standard accessories included : Carrying case ………………1 pc.

3-7

Operation manual………… .1 pc. Optional accessory:

Cable and software for

S232C and USB

P/N: HFH80-SW

3-1 Dis pla y 3-2 Pow er ke y (Mu lti functional) 3-3 Uni t con ver sio n 3-4 Tip se lec tio n (HFH80 only) 3-5 Max h old k ey 3-6 Zer o 3-7 Plu nge r tip 3-8 RS- 232 C int erf ace 3-9 Bat ter y com par tment

Larger Frui ts

A. Select a n appropriate plunger t ip

for the commod ity to be tested. See “ A GU ID E TO S ELE CT TH E MODEL ”.

B. Select a random sample of 10 to 15

fruits of uniform size and the same temperature or 3% of the lot to be sampled. For best results, suggest one person should test the lot.

C. R

e mo v e a di s c o f s k i n o n op pos it e c heeks o f t he fr uit midway betw een t he stem and bottom on sun and shade sides. Then proceed with puncture test.

D. Zero adjustment

Hold the HFH80 vertically with the plunger tip hanging in the air, the

reading on the display should be 0. If not, depress the 'ZERO' key to make the HFH80 tester display “0”.

E. Hold the fruit against a hard

s u r fac e a n d f o rce t he t i p ve rt ic al ly i nt o the pulp at a un if or m speed (take a bo ut 3 seconds).

F. The t ip sho uld c ons ist ent ly

penetrate to the b reak in t ip diameter or t o th e sc ribed lin e on some tips.

G. Reco

rd reading on the display.

H. If a maximum reading is needed,

just press the key 'MAX' till the mark 'Max' shows on the display before taking measurements. The appearance of mark 'Max' is controlled by the key 'MAX'.

I. To take the next measurement, just

depress the 'ZERO' key and repeat steps from E to G.

J. Unit conversion is controlled by

depressing the key 'UNIT'.

K. F

or the model HFH83, make sure

th e plunger tip is in accordance

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with the tip si ze on the display. If not, pr ess th e key ' 7.9/11.1' to choose.

Smaller Fru its

Similar to large fruit testing except:

A. Ma ke a punct ure test on only

one cheek midway between the stem and the bottom.

B. R e m o v a l o f t h e s k i n i s

unnecessary.

C. P e n e t r a t i o n s h o u l d b e

suff i c ient to o b t ain p eak reading. Repeti tive testing is a perf ect te sting techn ique f or small fruits.

6. BATTERY RE PLACEMENT

A. When the battery sym bol

appears on the display, it is time to replace the batteries.

B. Slide the Battery Cover away

from the tester and remove the batteries.

C. Install batteries paying

careful attention to polarity.

7. MAINTENA NC E

A. Before daily us e, exercise the

pl unger in an d out for 10 s e c o n d s t o e n s u r e t h e mechanism functions freely.

B. After daily use, cl ea n th e

penetrometer tips. Carefu lly hold the te ster with t he load shaft pointing down u nder a slowly flowi ng water faucet for a few seconds, dry with a towel and all ow to dr y further by s tan d ing it wit h s h aft pointing down.

C. The HFH80 tester should never

be lubr icate d with oi l since thi s w i ll a ccum u lat e d u st causing increased friction and decrease

d accuracy.

WARNING

PART 8 AND 9 ARE ONLY FOR SKILLED AND PROFESSIONAL PERSONNEL ONLY.

Users are not suggested to try to carr y o ut the o perations in part 8 and p art 9. Improper operation will lead to the HFH80 tester inaccurate , even coul d not work.

8.HOW TO SET THE TIME OF AUTO POWE R OFF

The default setting f or auto power off at the factory i s 5 minutes. That means the tester will auto power off 5 mi nutes from the time of last key operation. Users can change it to any value bet ween 09 mi nu tes by f ol lowing steps.

ess the POW ER for abou t 4

Depr seconds, relea se it after "OFF" shows on displa y, then press the key 'MA X' to preset the ti me as desired. To disabl e the fun ction o f

auto powe r off, just prese t the time to 0. the tester will only be shut down manually in such a case.To quit the time setting, just press the key ZERO.

9.ACCURACY VERIFICATION

rior to u s e, t h e HF H 8 0 te s ter accuracy s hould b e verified b y testing with weights.

HFH80 accuracy can be easily verified by the following formula.

P=N/S

Here P is HFH80 reading N is the force applied to the

plunger tip

S is the area on which the

ce is applied.

for

Based on the above formula,

coefficients are gi ven for different models be low.

Model

HFH81

HFH83

Tip

3.5mm

7.9mm

11.1mm

Coefficient

k=10.3 99

k=2.04 1

k=1.05 3

Apply a f orce N to the tip. When r e ading s are a l m ost u n c h a n g e d , p r e s s th e k e y 'MAX' to hold the reading P w h i ch s ho u l d s ati s f y t h e equation below.

P=k× N e. g. if applying 0.4 kgf to HFH81, the reading should be

0.4 10.399=4.16

× Max. deviation is ±(4.16*1%+ 0.1)= ±0.14 so correct reading should lie in

4.16±0.14

=4.02-4.30kgf But i f apply ing 11.0 kgf to

HFH83 (7.9mm) the reading

should be 11x2.041 =22.4 5 Max. deviation is ±(22.45*1% +0.1) =±0.32 so correct reading should lie in

22.45±0.32 =22.13-22.77kgf

If th e deviation is beyond it s

accuracy, D epress Power key

an d not release i t till 'CO'

appears on the Display. I t take s

about 6 seconds fro m starting

depressin g Power key. Then

adjust the read ing P by the

'MAX' key (in creas

e) o r 'UNIT' key (decre ase) to the d esire d value. s tore that value and quit by pressing Zero key.

10. COMMUNICATE WITH PC

A. Instal l the optional RS232 C

software to the PC.

B. Connect the test er to the COM

or USB port of the P C w ith the opt ion al R S23 2 c abl es. To connect to a USB port, a U SB adaptor is required.

C. Run the software on the deskto p

and s elect the COM po rt or U S B p ort i n t h e s ys t e m settings.

D . C li ck t h e b u t t o n o f d a t a

collec ti o n , t he n clic k t he button of Begin/Continue.

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfu nction s, it must be returne d t o t he facto ry for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number im mediately up on phone or wr itten request. Upon examinatio n by OMEGA, if the unit is found to be defective, it will be repaired or replaced at ch

arge. OMEGA’s WARRANTY does no t apply t o de fects resulting from any action of the purchaser , in cluding but not limited to mishandling, imp roper interfacing, operation outside of design limits, improper repair, or unauthorized modificati on. Th is WA RRANTY is V OID if the unit shows evidence of hav ing been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the compamy will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS F OR A PAR TICULAR PURPOSE ARE HEREBY DIS CLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shal l OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuc lear in stallation or a ctivity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY / DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in sucha manner.

WARRANTY/DISCLAIMER

Dire ct all warra nty and repai r reques ts/in quiri es to the OMEGA Cu stome r Serv ice Department. B EFORE RETURNI NG ANY PRODU CT(S) T O O MEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OM EGA ’S CU STO ME R SER VIC E DEP ART ME NT (I N OR DER T O AV OID PROCESSING DELAYS). Th e assigned AR number should the n be marked on the outside of the return package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.

FOR WARRANTY have the following information available BEFORE contacting OMEGA:

1. Purchase Order number under which the product was PURCHASED,

2. Model and serial number of the product under warranty, and

3. Repair instructions and/or specific problems relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.

ment may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice. WARNING: These products are not designed for use in, and should not be used for, human applications.

RETURN REQUESTS / INQUIRIES

RETURNS, please

FOR NON-WARRANTY REPAIRS, consult OMEGA for current repair charges. Have the following information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific

problems relative to the product.